Problem with connecting bus wire

Discussion in 'General Electronics Chat' started by Ankon, Apr 22, 2013.

  1. Ankon

    Thread Starter New Member

    May 10, 2011
    6
    0
    How to connect bus wire in proteus? why this circuit doesn't work?
     
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  2. masosi

    Member

    Dec 23, 2007
    11
    1
    Try naming the pins on the 8255 AD0, AD1... etc

    I think thats how I used to do it.

    Tom.
     
  3. LDC3

    Active Member

    Apr 27, 2013
    920
    160
    The pins 9 and 8 (AD0 and AD1) need to be connected to the address to access the registers of the 8255. In the diagram, they are not connected. Also, pin 35 and 6 need to be connected.
     
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